panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff82573cbe) at panic+0x16b sys/kern/subr_prf.c:233
__assert(ffffffff825e6d2c,ffffffff82562b2b,90,ffffffff8254bcfb) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_pagealloc_pg(fffffd8007bdf200,fffffd806065bdc8,d984000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline]
uvm_pagealloc_pg(fffffd8007bdf200,fffffd806065bdc8,d984000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:710
uvm_pagealloc(fffffd806065bdc8,d984000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:918
pmap_get_ptp(fffffd806065bd98,1b30921000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1183
pmap_enter(fffffd806065bd98,1b30921000,659c8000,3,20) at pmap_enter+0x28b
uvm_fault_lower_lookup(ffff8000260ac710,ffff8000260ac748,ffff8000260ac690) at uvm_fault_lower_lookup+0x2a7 sys/uvm/uvm_fault.c:1169
uvm_fault_lower(ffff8000260ac710,ffff8000260ac748,ffff8000260ac690,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1204
uvm_fault(fffffd807a695b98,1b30920000,0,1) at uvm_fault+0x248
upageflttrap(ffff8000260ac880,1b30920000) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181
usertrap(ffff8000260ac880) at usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7f7fffffb050, count: 245
End of stack trace.